Rolex Datejust 31mm New 2025 Release Yellow Gold Reference 278278 Red Ombre Diamond Dial

Model case

Oyster, 31 mm, yellow gold
Oyster architecture

Monobloc middle case, screw-down case back and winding crown
Diameter

31 mm
Material

18 kt yellow gold
Bezel

Fluted
Winding crown

Screw-down, Twinlock double waterproofness system
Crystal

Scratch-resistant sapphire, Cyclops lens over the date
Water resistance

Waterproof to 100 metres / 330 feet

Movement

Perpetual, mechanical, self-winding
Calibre

2236, Manufacture Rolex
Precision

-2/+2 sec/day, after casing
Functions

Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting
Oscillator

Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers
Winding

Bidirectional self-winding via Perpetual rotor
Power reserve

Approximately 55 hours

Bracelet

President, semi-circular three-piece links
Material

18 kt yellow gold
Clasp

Concealed folding Crownclasp